Primary electron acceptor of PS-II is

Options

A. (a) Pheophytin
B. (b) Ferredoxin
C. (c) PQ
D. (d) PC

Answer

**Step-by-Step Solution:**

1. **Identify the Photosystem**: The question asks about the primary electron acceptor of Photosystem II (PS-II). PS-II is a crucial component of the photosynthetic process in plants.

2. **Understand the Role of PS-II**: PS-II is involved in the light-dependent reactions of photosynthesis. It is responsible for the photolysis of water, which generates electrons, protons, and oxygen.

3. **Locate the Primary Electron Acceptor**: In PS-II, the primary electron acceptor is the molecule that first accepts the electrons generated during the photolysis of water.

4. **Identify the Primary Electron Acceptor**: The primary electron acceptor of PS-II is known as Pheophytin. It is the first molecule to accept the electrons that are excited by light energy absorbed by PS-II.

5. **Eliminate Incorrect Options**:
- Option A: Pheophytin (Correct answer)
- Option B: Ferredoxin (This is associated with PS-I, not PS-II)
- Option C: Plastocyanin (This is involved in the electron transport chain but is not the primary acceptor of PS-II)
- Option D: Plastocyanin (Same as option C, incorrect)

6. **Conclusion**: The primary electron acceptor of PS-II is Pheophytin.

**Final Answer**: The primary electron acceptor of PS-II is Pheophytin.

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